git: primary_branch() via libgit

Author: medvednikov

git/libgit.v

@@ -27,6 +27,11 @@ fn C.git_repository_open(repo voidptr, path &char) int
 fn C.git_libgit2_features()
 fn C.git_commit_lookup(voidptr, voidptr, &C.git_oid) int
 
+fn C.git_repository_free(repo &C.git_repository)
+fn C.git_repository_head(out &&C.git_reference, repo &C.git_repository) int
+
+fn C.git_reference_free(ref &C.git_reference)
+
 struct C.git_repository {}
 
 struct C.git_commit {}
@@ -181,6 +186,41 @@ pub fn (r &Repo) current_branch() string {
 	return branch.after('refs/heads/')
 }
 
+pub fn (repo &Repo) primary_branch() string {
+	err := C.git_repository_open(&repo.obj, repo.path.str)
+	if err != 0 {
+		return ''
+	}
+	defer {
+		C.git_repository_free(repo.obj)
+	}
+
+	// Get HEAD reference
+	head_ref := &C.git_reference(unsafe { nil })
+	err_head := C.git_repository_head(&head_ref, repo.obj)
+	if err_head != 0 {
+		return ''
+	}
+	defer {
+		C.git_reference_free(head_ref)
+	}
+
+	// Get symbolic target
+	symbolic_ref := C.git_reference_symbolic_target(head_ref)
+	if symbolic_ref == unsafe { nil } {
+		return ''
+	}
+
+	// Convert to V string and extract branch name
+	branch := unsafe { cstring_to_vstring(symbolic_ref) }
+	return get_branch_name_from_reference(branch)
+}
+
+// Assuming this helper function exists elsewhere in your code
+fn get_branch_name_from_reference(ref string) string {
+	return ref.after('refs/heads/')
+}
+
 pub fn (r &Repo) show_file_blob(branch string, file_path string) !string {
 	mut blob := &C.git_blob(unsafe { nil })
 	mut branch_ref := &C.git_reference(unsafe { nil })

git/util.v

@@ -85,9 +85,11 @@ pub fn remove_git_extension_if_exists(git_repository_name string) string {
 	return git_repository_name.trim_string_right('.git')
 }
 
+/*
 fn get_branch_name_from_reference(value string) string {
 	branch_query := r'refs/heads/(.*)'
 	mut re := regex.regex_opt(branch_query) or { panic(err) }
 	re.match_string(value)
 	return re.get_group_by_id(value, 0)
 }
+*/

src/gitly.v

@@ -77,6 +77,9 @@ fn new_app() !&App {
 	app.version = version
 
 	app.handle_static('src/static', true)!
+	if !os.exists('avatars') {
+		os.mkdir('avatars')!
+	}
 	app.handle_static('avatars', false)!
 
 	app.load_settings()